Dr. Gillian Isaac, expert in ABA key words, discusses pulse oximeters and hemoglobinopathies. The podcast covers the basics of pulse oximetry, its limitations, and the effects of methylene blue and met hemoglobinemia. The speakers also explore the accuracy of pulse oximetry, substances that can affect readings, and the use of methylene blue in surgeries and treatment. They discuss the association between benzocaine and methemoglobinemia, the side effects of vasodilators, and the diagnosis and treatment of a cyanotic and incoherent patient. The hosts also share random recommendations.